chore(package): update nyc to version 11.3.0

Closes #21

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
     "loopback-connector-mongodb": "3.2.0",
     "loopback-testing": "1.4.0",
     "mocha": "3.4.2",
-    "nyc": "11.0.3",
+    "nyc": "11.3.0",
     "semantic-release": "6.3.6",
     "validate-commit-msg": "2.12.3"
   },